Not placed in a species group in the original publication, although the authors implied a possible relationship to what is now Isthmohyla. Faivovich et al. (2005) could not allocate several members of former "Hyla" to any of the new genera but believed that they would be so allocated with additional work. As a provisional measure they allocated these species to the non-taxon "Hyla", but which is not part of the North American-Eurasian clade which bears the name Hyla (Frost, 2007). Hyla antoniiochoai can be distinguished from other similar species by unique morphological features (De la Riva and Chaparro, 2005).

Type specimens were found in cloud forest during the rainy season. Hyla antoniiochoai appears to be a secretive species living in bromeliads, and it possibly has a mostly arboreal, non-swimming lifestyle. The holotype contains immature white ovarian eggs, developed fat bodies, and undeveloped oviducts, suggesting that the specimen, collected at the end of the wet season, was probably ready to lay eggs in the following days or weeks. This individual was found at night within a fallen bromeliad of the genus Catopsis, near a stream, whereas the second individual wasin an area without water bodies. Flora of the area includes plants in the genera Miconia, Ruagea, Myrica, Fucsia, Clusia, Alnus, Calceolaria, Peperomia, Muehlenbeckia, Oreocallis, Fragaria, Lachemilla, Rubus, Psychotria, Meliosma, Agalinis, Alonsoa, Leucocarpus, Physalis, Solanum, Pilea, Valeriana, Viola, Cyathea, Diplopterygium, Polypodium, Histiopteris, as well as orchids and bamboos. Other species of anurans that could be identified in the area of the type locality of Hyla antoniiochoai are Gastrotheca excubitor, Hyla armata, Eleutherodactylus rhabdolaemus, Phrynopus peruvianus, and P. cophites (De la Riva and Chaparro, 2005).